6545729540 has 48 divisors (see below), whose sum is σ = 16092929664. Its totient is φ = 2189510400.

The previous prime is 6545729507. The next prime is 6545729549. The reversal of 6545729540 is 459275456.

It is a super-2 number, since 2×6545729540² = 85693150421657223200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (6545729549) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 564446 + ... + 575925.

It is an arithmetic number, because the mean of its divisors is an integer number (335269368).

Almost surely, 2^6545729540 is an apocalyptic number.

It is an amenable number.

6545729540 is an abundant number, since it is smaller than the sum of its proper divisors (9547200124).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

6545729540 is a wasteful number, since it uses less digits than its factorization.

6545729540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1140428 (or 1140426 counting only the distinct ones).

The product of its (nonzero) digits is 1512000, while the sum is 47.

The square root of 6545729540 is about 80905.6829895156. The cubic root of 6545729540 is about 1870.6219194051.

The spelling of 6545729540 in words is "six billion, five hundred forty-five million, seven hundred twenty-nine thousand, five hundred forty".